There is a HIGH severity vulnerability affecting {project}.
There is a defect in the CPython “tarfile” module affecting the “TarFile”
extraction and entry enumeration APIs. The tar implementation would process
tar archives with negative offsets without error, resulting in an infinite
loop and deadlock during the parsing of maliciously crafted tar archives.
This vulnerability can be mitigated by including the following patch after
importing the “tarfile” module:
import tarfile
def _block_patched(self, count):
if count < 0: # pragma: no cover
raise tarfile.InvalidHeaderError("invalid offset")
return _block_patched._orig_block(self, count)
_block_patched._orig_block = tarfile.TarInfo._block
tarfile.TarInfo._block = _block_patched
Please see the linked CVE ID for the latest information on affected
versions:
* https://www.cve.org/CVERecord?id=CVE-2025-8194
* https://github.com/python/cpython/pull/137027
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